MULTIPLE-CHOICE TESTS: CHOOSE THE CORRECT ANSWER/STATEMENT: 1. A child of 3 suddenly fell sick 16 hours ago with a sudden rise in temperature to 39C and abdominal pain around the umbilicus. There was repeated vomiting and diarrhea. The general state of the child was severe with a heart rate of 140 per min., muscular rigidity in the right iliac fossa. What is the most probable diagnosis? A. Acute appendicitis B. Acute gastritis C. Acute gastroduodenitis D. Gastroenteritis E. Peritonitis 2. Diarrhea has been defined as a probable albeit not constant feature of acute appendicitis. In which of the following cases is this sign likely to be evident? A. In the first day of illness B. In patients with a very high temperature C. Pelvic position of the vermiform appendix D. Retroperitoneal position of the vermiform appendix E. In prolonged illness 3. A child of 2 and a half presented with abdominal pains, emesis and a high temperature of 37.6C. The physical signs elicited did not point to a diagnosis of acute appendicitis. What should be the physician’s course of action? A. Repeat the examination in 12 hrs B. Repeat the examination in 24 hrs C. Immediate hospitalization and continuous monitoring D. Discharge the patient E. Prescribe an analgesic and antibiotics 4. In which position of the vermiform appendix is the rectal examination most informative? A. Retrocecal B. Pelvic C. Postileal D. Medial E. Paracecal 5. Which of the following signs is the most useful in diagnosis of acute appendicitis in a febrile child of 8 presented with abdominal pains and emesis? A. Local tenderness in the right iliac fossa B. Local tenderness and muscular rigidity in the mesogastrium C. Rigidity around the umbilicus D. Local tenderness and muscular rigidity in the right iliac fossa 6. Which of the following is the correct classification of peritonitis based on clinical manifestations? A. Infectious and non-infectious B. Bilious, calculous and urinary C. Acute and chronic D. Serous, fibrous and purulent 1 E. Localized and diffuse 7. Which of the following is NOT an early complication of acute appendicitis? A. Peritonitis B. Intestinal fistula C. Aspiration pneumonia D. Ligature fistula E. Suppuration 8. A child of 3 was taken ill 2 hrs ago with right iliac fossa and suprapubic abdominal pains, a body temperature of 38.2C, recurrent emesis and diarrhea. On examination, the abdomen was found to be tense around the umbilicus and in the lower regions. Signs of peritoneal irritation were positive with a muco-purulent vaginal discharge. Your diagnosis: A. Acute appendicitis B. Primary peritonitis C. Acute intestinal obstruction D. Acute non-specific mesenteric adenitis E. Pelvic inflammatory disease 9. A boy of 12 presented with abdominal pains and a fever lasting for the past 3 days. On examination an abdominal mass was suspected. Which of the following would be most effective in verifying this diagnosis? A. Plain abdominal radiograph B. Endoscopy C. Contrast abdominal radiography D. Rectomanoscopy E. Ultrasonography 10. What should be the surgeon’s course of action in an intra-operative finding of an appendix mass while operating on a child of 12 for acute destructive appendicitis? A. Drainage of the peritoneal cavity without an appendectomy B. Continue the appendectomy as usual C. Complete closure of the peritoneal cavity without appendectomy D. Remove the mass E. Appendectomy with subsequent drainage of the peritoneal cavity 11. Which of the following is not a direct complication of acute appendicitis A. An appendix mass B. Appendiceal abscess C. Local peritonitis D. Diverticulitis E. Diffuse peritonitis 12. During the past week a one month old infant was reported to have been having projectile vomiting. The child was in a severe state, adynamic with 2nd degree hypotrophy. On palpation, the abdomen was found to be soft, intestinal peristalsis of the “sand-clock” was evident. Which investigation would prove most appropriate at arriving at a diagnosis? A. Gastro-duodenoscopy B. Plain radiography C. Ultrasonography D. Thermography E. CT scan 2 13. Esophageal atresia is diagnosed immediately after birth on the basis of: A. Excessive salivation and foaming at the mouth B. Excessive vomiting on feeding C. Esophageal catheterization D. Respiratory distress E. Abdominal distention 14 . Which of the following is the most informative in diagnosing Ladd’s syndrome? A. Complete blood count B. Plain thoracic radiography C. Bronchoscopy D. Contrast radiography E. Plain abdominal radiography 15. On a plain abdominal radiograph two liquid levels were visible. This testifies to the child having: A. Pyloric atresia B. Ileal atresia C. Hirschsprung’s disease D. Ladd’s syndrome E. Duodenal atresia 16. The most effective method of treating Ladd’s syndrome is: A. Conservative management B. Ladd’s operation C. Soave’s operation D. Colostomy E. Hirschsprung’s operation 17. Which of the following is the pathogenetic basis for meconium ileus? A. Congenital hepatitis B. Ileal stenosis C. Pancreatic cystic fibrosis D. Portal hypertension E. Volvulus neonatorum 18. Towards the end of the first day of life, the neonate was observed to have bilious emesis after each feeding, earlier viscous grayish meconium had been discharged. A plain abdominal radiograph revealed two levels of liquid in the epigastrium and absence of gas in the lower gut. Which is the most probable diagnosis? A. Hirschsprung’s disease B. Meconium ileus C. Esophageal atresia D. Diaphragmatic hernia E. Ladd’s syndrome 19. A positive Farber’s test is indicative of which pathological state? A. Ladd’s syndrome B. Ileal stenosis C. Duodenal stenosis D. Pancreatic cystic fibrosis 3 E. Duodenal atresia 20. Which of the following is not a component of meconium disease of infancy? A. Meconium ileus B. Meconium peritonitis C. Meconium plug syndrome D. Meconium ileus equivalent (MIE) E. Meconium stenosis syndrome 21. The conservative method of meconium ileus management is: A. Gastrografin enema B. Antibacterial therapy C. Spasmolytic drugs D. Intravenous infusion E. Ultrasound therapy 22. Marked abdominal distention was noticed in the fifth day of life of a neonate female with intestinal loops visible on the anterior abdominal wall. Meconium was discharged after an enema. On a plain abdominal radiograph, the large intestine was found to be distended. What is the most probable diagnosis? A. Ladd’s syndrome B. Ileal stenosis C. Hirschsprung’s disease D. Portal hypertension E. Intususception 23. A neonate in whom the anus was noted to be absent was observed to be occasionally passing urine with traces of meconium, and clear urine on other occasions. Which type of anomaly is present? A. Anal atresia B. Anal atresia with rectourethral fistula C. Anal atresia with rectovesical fistula D. Rectal atresia E. Cloacal malformation 24. Which of the following is the most informative in diagnosis of HD? A. Biopsy B. Plain radiography C. Contrast radiography D. Endoscopy E. Ultrasonography 25. Which of the following is not a method of surgical management in HD? A. Duhamel’s operation B. Swenson’s operation C. Soave’s operation D. Ladd’s operation E. Rehbein’s operation 26. Which is not indicative of HD? A. Aganglionic bowel on biopsy B. Abnormal recto-anal inhibitory reflex 4 C. Abdominal distention D. Abdominal pain E. Constipation 27. A child aged 5 months was fed carrots for the first time became irritated and there was recurrent vomiting. The general state was moderately severe, the abdomen was not distended and on palpation was soft. Rectal exam revealed a viscous mucoid bloody discharge. Which of the following diagnoses comes to mind? A. Ladd’s syndrome B. Intestinal polyposis C. Hirschsprung’s disease D. Portal hypertension E. Intussusception 28. Which symptom is not characteristic of paralytic ileus? A. Abdominal pain B. Constipation C. Increased peristalsis D. Vomiting E. Abdominal distention 29. Which of the following is the least informative in diagnosis of intussusception? A. Endoscopy B. Plain radiography C. Contrast radiography D. Biopsy E. Ultrasonography 30. Which symptom is not characteristic of intussusception? A. Abdominal pain B. Constipation C. Increased peristalsis D. Abdominal distention E. Vomiting 31. Which is not indicative of intussusception? A. Aganglionic bowel on biopsy B. Sausage-shaped abdominal mass C. “Target” lesion and “pseudo-kidney” on ultra-sound investigation D. Hyper-peristaltic rushes E. Dilated loops of bowel and air fluid levels on plain abdominal radiograph 32. Which of the following is not a symptom of possible blood loss? A. Pallor B. Weakness C. Tachycardia D. Hypertension E. Weak pulse 33. Which symptom is not characteristic of portal hypertension? A. Intestinal perforation B. Caput Medusae 5 C. Hematemesis D. Melena E. Hypersplenism 34. Which of the following is not a sign of possible blood loss? A. Low BP B. Melena C. Hematemesis D. Bloody stool E. Excessive vomiting 35. Which of the following is the most informative in the diagnosis of rectal polyps? A. Radiography B. Ultrasonography C. Rectoscopy D. CBC E. CT scan 36. Which is not a possible complication of a Meckel’s diverticulum ? A. Hemorrhage B. Hypersplenism C. Intussusception D. Inflammation E. Perforation 37. During inguinal herniotomy in a 12 year old the testis was found in the hernia sac. What type of hernia is this? A. Richter’s hernia B. Congenital indirect hernia C. Acquired direct hernia D. Direct hernia E. Femoral hernia 38. A hernia containing the vermiform appendix in its sac is known as: A. Richter’s hernia B. Amyand’s hernia C. Littre’s hernia D. Omentocele E. Indirect hernia 39. An exomphalos is: A. A strangulated umbilical hernia B. Synonymous with an omphalocele C. A strangulated femoral hernia D. A strangulated inguinal hernia E. A sliding hernia 40. Which of the following hernias is diaphragmatic? A. Richter’s hernia B. Bogdalech’s hernia C. Amyand’s hernia D. Littre’s hernia 6 E. None of the above 41. A patent processus vaginalis can lead to all of the following, except: A. Funiculocele B. Omphalocele C. Bubonocele D. Scrotal hernia E. Hydrocele 42. The approach in aspiration of a pyothorax should be: A. In the third/fourth intercostal space along the midline B. Sixth/seventh intercostal space along the midline C. Sixth/seventh intercostal space along mid-axillary line D. Third/fourth intercostal space along the anterior axillary line E. Fifth intercostal space along the posterior axillary line 43. The approach in opening a closed, tense pyopneumothorax should be in the: A. Third/fourth intercostal space along the midline B. Third/fourth intercostal space along the anterior axillary line C Seventh intercostal space along the midline D. In the third/fourth intercostal space along the midline E. Second intercostal space along the posterior axillary line 44. Which of the following is considered a benign outcome of staphylococcal pulmonary destruction? A. Pyothorax B. Empyema C. Emphysematous cyst (bulla) D. Lung abscess E. None of the above 45. Which is not a possible outcome of staphylococcal pneumonia? A. Pyothorax B. Pneumothorax C. Empyema D. Emphysematous cyst E. Hydatid cyst 46. A cortical abscess requires: A. Surgical management B. Observation C. Anti-bacterial, anti-inflammatory and symptomatic therapy D. Aspitation E. None of the above 47. Which of the following is not an anorectal abscess type? A. perianal B. submucous C. pelviorectal D. ischiorectal E. subrectal 7 48. The medical term for a boil is: A. furuncle B. carbuncle C. cellulitis D. apocrinitis E. impetigo 49. Hidradenitis suppurativa is a purulent inflammatory process of the: A. apocrine glands B. hair follicles C. subcutaneous tissues D. eyelash follicles E. None of the above 50. Which of the following is a likely late complication omphalitis? A. Portal hypertension B. Omphalocele C. fistula D. Internal hemorrhage E. None of the above 51. A. B. C. D. E. The first radiological features of acute osteomyelitis appear: by the end of the first day during the first week after the first week immediately the patient presents in the first few hours of illness 52. The earliest radiologic finding in acute osteomyelitis is: A. an elevated periosteum B. osteomalacia C. sequestration D. fistula formation E. osteoporosis 53. Which is not an atypical form of osteomyelitis? A. B. C. D. E. Sclerosing osteomyelitis Paget’s disease Albuminous osteomyelitis Brodie’s abscess Osteomyelitis antibiotica 54. Presence of a sequestrum and fistulas is indicative of: A. Acute osteomyelitis B. Chronic osteomyelitis C. Brodie’s abscess D. Albuminous osteomyelitis E. None of the above 55. Which of the following is not a likely outcome of an osteomyelitic process? 8 A. B. C. D. E. Involvement of the joints Amyloid disease Deformity Pott’s disease Spontaneous fractures 56. Congenital absence of one of the testes is known as: A. B. C. D. E. anorchia monorchism ectopia dystopia cryptorchidism 57. Cryptorchidism is most frequently found: A. bilaterally B. on the right side C. retroperitoneally D. in the abdomen E. on the left side 58. All are possible complications of an undescended testis except: A. malignization B. acute scrotum C. torsion and trauma D. hypoplasia E. sterility 59 Which is not a surgical emergency? A. Testicular torsion B. Phimosis C. Paraphimosis D. Torsion of testicular appendages E. Testicular trauma 60. Neonatal testicular torsion is: A. intra-vaginal B. complete C. incomplete D. extra-vaginal E. necrotic 61. A dark red strawberry-like swelling that empties on pressure is most likely a : A. B. C. D. E. hemangioma lymphangioma fibroma dermoid cyst teratoma 62. A Wilms’ tumor is a: 9 A. B. C. D. E. hemangioma nephroblastoma carcinoma seminoma lipoma 63. Which of the following is the most rational in diagnosis of a palpated peritoneal tumor stretching from the liver to the pelvic region? A. B. C. D. E. Excretory urography Plain abdominal radiograph biopsy pneumoperitoneum laparoscopy 64. A bilateral Wilms’ tumor requires: A. nephrectomy B. radiotherapy C. nephrectomy and post-operative radiotherapy D. radiotherapy and chemotherapy E. chemotherapy 65. According to its classification, which of the following is not a hemangioma: A. simple B. cavernous C. capillary D. mixed E. complex 66. Which is not an intrinsic cause of uretero-pelvic junction obstruction? A. B. C. D. E. Aberrant renal artery Localized inflammatory process Ureteral polyps Congenital absence of ureteric smooth muscle Ureteral leiomyoma 67. All of the following can be causes of hydronephrosis except: A. B. C. D. E. aberrant renal vessels high insertion of the ureter congenital absence of ureteric smooth muscle undescended testis ureteral polyps 68. Which of the following is a contra-indication to catheterization of the urinary bladder? A. B. C. D. hematuria urethral trauma prostate adenoma neoplasm of the bladder 10 E. chronic cystitis 69. Which of the following gives an objective quantitative assessment of micturition? A. urethrography B. chromocystoscopy C. uroflowmetry D. sphincterometry E. urochimography 70. Which of the following radiologic investigations is used to reveal vesicoureteral reflux? A. B. C. D. E. excretory urography pneumocystography voiding cystography retrograde ureteropyelography plain abdominal radiograph 71. The principal cation of extracellular fluid is: A. magnesium B. calcium C. chloride D. sodium E. potassium 72. The normal serum sodium value is: A. 3 – 5 mmol/l B. 90 – 110 mmol/l C. 0.7 – 0.9 mmol/l D. 135-150 mmol/l E. 20- 50 mmol/l 73. Which ion is necessary for blood coagulation and neuromuscular excitability? A. potassium B. magnesium C. calcium D. chloride E. sulphate 74. Which contains sodium, potassium and chloride in almost the same concentration as in the plasma? A. Ringer’s lactate solution B. isotonic saline solution C. Darrow’s solution D. 5% dextrose solution E. 5% glucose solution 75. A. B. C. D. Which of the following signs is not likely in a case of water intoxication? vomiting of clear fluid a high hematocrit dilute urine considerable amounts of urine 11 E. coma 76. During a laproscopic examination of the deep surface of the lower anterior abdominal wall (using a lighted scope on a thin tube inserted through the wall), the attending physician noted something of interest and asked the young resident to look at the medial inguinal fossa. To do so, the young doctor would have to look at the area between the: A. B. C. D. E. inferior epigastric artery and urachus obliterated umbilical artery and urachus inferior epigastric artery and lateral umbilical fold obliterated umbilical artery and inferior epigastric artery median umbilical ligament and medial umbilical ligament 77. If one were to make an incision parallel to and 2 inches above the inguinal ligament, one would find the inferior epigastric vessels between which layers of the abdominal wall? Camper's and Scarpa's fascias A. B. C. D. External abdominal oblique and internal abdominal oblique muscles Internal abdominal oblique and transversus abdominis muscles Skin and deep fascia of the abdominal wall Tranversus abdominis muscle and peritoneum 78. A man is moving into a new house and during the process lifts a large chest of drawers. As he lifts he feels a severe pain in the lower right quadrant of his abdomen. He finds that he can no longer lift without pain and the next day goes to see his physician. Surgery is indicated and during the surgery the surgeon opens the inguinal region and finds a hernial sac with a small knuckle of intestine projecting through the abdominal wall just above the inguinal ligament and lateral to the inferior epigastric vessels. The hernia was diagnosed as: A. B. C. D. A congenital inguinal hernia A direct inguinal hernia A femoral hernia An incisional hernia 79. An indirect inguinal herniaWhich structure passes through the deep inguinal ring? A. B. C. D. E. Iliohypogastric nerve Ilioinguinal nerve Inferior epigastric artery Medial umbilical ligament Round ligament of the uterus 80. A loop of bowel protrudes through the abdominal wall to form a direct inguinal hernia; viewed from the abdominal side, the hernial sac would be found in which region? A. Deep inguinal ring B. Lateral inguinal fossa C. Medial inguinal fossa 12 D. Superficial inguinal ring E. Supravesical fossa 81. In a female with an indirect inguinal hernia, the herniated mass lies along side of which structure as it traverses the inguinal canal? A. B. C. D. E. Iliohypogastric nerve Inferior epigastric artery Ovarian artery and vein Pectineal ligament Round ligament of the uterus 82. While performing a routine digital examination of the inguinal region in a healthy teen-aged male, the physician felt a walnut-sized lump protruding from the superficial inguinal ring. She correctly concluded that it was : A. B. C. D. E. definitely an indirect inguinal hernia possibly an unusual femoral hernia definitely a direct inguinal hernia possibly an enlarged superficial inguinal lymph node either a direct or an indirect inguinal hernia 83. A pediatrician has diagnosed a newborn baby of having right-sided cryptorchidism (undescended testis). The testis may have been trapped in any site EXCEPT: A. B. C. D. E. At the deep inguinal ring Just outside the superficial inguinal ring Pelvic brim Perineum Somewhere in the inguinal canal 84. A 15-year-old boy was admitted to the emergency room for having large bowel obstruction resulting from a left-sided indirect inguinal hernia. The most likely intestinal segment involved in this obstruction is the: A. B. C. D. E. ascending colon cecum descending colon rectum sigmoid colon 85. Which nerve passes through the superficial inguinal ring and may therefore be endangered during inguinal hernia repair? A. B. C. D. E. Femoral branch of the genitofemoral Ilioinguinal Iliohypogastric Obturator Subcostal 13 86. During exploratory surgery of the abdomen, an incidental finding was a herniation of bowel between the lateral edge of the rectus abdominis muscle, the inguinal ligament and the inferior epigastric vessels. These boundaries defined the hernia as a(n) A. B. C. D. E. Congenital inguinal hernia Direct inguinal hernia Femoral hernia Indirect inguinal hernia Umbilical hernia 87: Pulmonary function testing performed as long-term follow-up care of pediatric patients treated for parapneumonic effusions reveals which of the following? A: Persistent restrictive lung defect B: Hypoxemia C: Mild expiratory flow limitation D: Reduced exercise tolerance from restrictive ventilatory limitations E: None of the above 88. Which of the following is not included regularly in pediatric management of complicated parapneumonic effusions? A: Video-assisted thoracoscopic surgery B: Rib resection with open drainage C: Antibiotic infusion D: Recombinant tissue plasminogen activator E: Decortication and debridement 89. What organ systems are affected by CF and what are the clinical manifestations? A: Pulmonary B: Gastrointestinal C: Hepatic D: Reproductive E: All of the above 90. How is CF inherited? A: Autosomal Dominant B: Autosomal Recessive C: Sex-linked Recessive E: None of the above 14 91. A 10-month-old girl has had vomiting and diarrhea for 3 days. She has not had a wet diaper in 18 hours, her heart rate is 140 beats per minute, her respiratory rate is 40 breaths per minute, and her blood pressure is 75/35 mm Hg. Examination shows a minimally responsive infant with cool extremities, 4-second capillary refill, parched lips, and very sunken eyes. Which of the following best describes her state of hydration? A: Mild dehydration B: Moderate dehydration C: Severe dehydration D: Normal hydration E: Hypervolemic 92: A 10-month-old girl has had vomiting and diarrhea for 3 days. She has not had a wet diaper in 18 hours, her heart rate is 140 beats per minute, her respiratory rate is 40 beats per minute, and her blood pressure is 75/35 mm Hg. Examination shows a minimally responsive infant with cool extremities, 4-second capillary refill, parched lips, very sunken eyes, and a currently weight of 8 kg. What is her estimated fluid deficit? A: 300 mL B: 500 mL C: 900 mL D: 1000 mL E: 1200 mL 93. A 5-year-old presents to the clinic with a 1-week history of vomiting and a 3-day history of abdominal pain. His mother notes a weight loss of approximately 10 pounds and reports that he has been wetting the bed. Vital signs are heart rate (HR) 135 beats per minute, respiratory rate (RR) 40 breaths per minute (deep), and blood pressure (BP) 90/54 mm Hg. He is afebrile and sleepy. His mucous membranes are dry. Capillary refill is 4 seconds. Heart, lungs, and abdominal examination findings are normal. Laboratory data include glucose of 560, sodium of 140, potassium 5, chlorides 100, CO2 content 4, BUN 35, and creatinine 2.0. Arterial blood gas shows pH of 7.02, PCO2 30, PO2 100 on room air, and HCO3 4. Evaluation of his blood gas values indicates which of the following? A: He has a respiratory alkalosis with metabolic compensation. B: The low pH is due to a high blood sugar. C: He has metabolic acidosis with inadequate respiratory compensation. D: His blood gas is within the reference range. E: He has severe hypoxemia. 94. A physician examines a 12-year-old girl with a 4-week history of intermittent lower abdominal pain and rectal bleeding. Her laboratory workup reveals hemoglobin of 9.9 g/dL, normal erythrocyte sedimentation rate and albumin, and normal stool studies (eg, culture and Clostridium difficile toxins A and B). Her growth is adequate. The colonoscopy findings are significant for the confluent moderate inflammation of the rectum, sigmoid, and distal descending colon, and biopsies reveal chronic inflammation with crypt abscesses and 15 architectural crypt changes. Findings from an upper GI series with a small bowel follow-through are normal. What is the correct diagnosis? A: Ulcerative colitis (UC) B: Crohn disease C: Viral colitis D: Allergic colitis E: Hemolytic-uremic syndrome 95. Gynecomastia in patients with Peutz-Jeghers syndrome warrants thorough evaluation to exclude testicular or gynecologic malignancy. A: Testicular or ovarian tumor B: Cirrhosis C: Gastrointestinal polyps D: Hyperthyroidism E: Polyps 96. According to current research data, which of the following polyposis syndromes arises from a nongenetic etiology? A: Gardner syndrome (ie, familial adenomatous polyposis syndrome) B: Gorlin syndrome (ie, basal cell nevus syndrome) C: Bannayan-Riley-Ruvalcaba syndrome (ie, Bannayan-Zonana syndrome) D: Peutz-Jeghers syndrome E: Cronkhite-Canada syndrome 97. A 1-week-old breastfed male infant is brought to a local emergency department for sudden onset of vomiting. The parents describe the emesis as forceful and bright yellow to green in color. The infant appears sleepy and has delayed capillary refill. Abdominal plain radiography shows some gas in the stomach but none in the bowel. Which of the following is the most appropriate intervention at this time? A: Administer intravenous fluids and admit the patient for observation in the hospital. B: Ask the parents to feed the infant an oral rehydration fluid and determine whether he tolerates it. C: Stabilize the patient and transfer him to a facility that has pediatric surgical support. D: Reassure the parents and allow the mother to continue breastfeeding. E: Repeat the abdominal radiography because lack of gas in the bowels may have been related to poor technique. 16 98. Which of the following is the cause of predisposition for midgut volvulus in patients with malrotation? A: Twisting of the bowel on itself while the bowel is returning to the abdominal cavity from physiologic herniation B: Formation of a narrow-base mesentery as the gut lengthens on the superior mesenteric artery without rotation C: Improperly formed peritoneal bands that pull the bowel into a twisted position D: Arrest in development at stage III of normal embryological gastrointestinal development E: None of the above 99. Which of the following does not cause bilious vomiting in an infant or child? A: Intestinal malrotation and volvulus B: Pyloric stenosis C: Duodenal atresia D: Small bowel obstruction E: Ulcerative colitis with colonic obstruction 100. Which of the following statements is incorrect? A: At the fourth week of gestation, the GI tract is a straight tube centrally located in the fetal abdomen. B: During the fifth week of gestation, the first stage of rotation begins and lasts until the tenth week. C: The superior mesenteric artery has its axis in line with the omphalomesenteric duct, and the primitive gut normally rotates in a counterclockwise direction. D: The second stage of rotation occurs between the tenth and twelfth weeks of gestation and involves the return of the intestine to the fetal abdominal cavity. E: At the completion of the normal rotation, the duodenojejunal junction is not fixed to the left of the aorta and the cecum has loose attachments to the right abdominal wall. 101. A 10-year-old boy presents with chronic recurrent abdominal pain. Which of the following additional symptoms is not consistent with the diagnosis of irritable bowel syndrome (IBS)? A: Onset of symptoms at age 6 years B: Mucus with stool C: Diarrhea with pain attacks D: Weight loss E: Defecation associated with prolonged straining and a sense of incomplete evacuation 17 102. A 15-year-old girl is diagnosed with irritable bowel syndrome (IBS). What is the long-term outcome of her illness? A: Periodic abdominal pain and altered bowel habit B: Resolution of symptoms and cure of illness with proper treatment C: Inflammatory bowel disease D: Higher risk to develop colon cancer E: All of the above 103. A 15-month-old boy who was previously healthy presents with a 24-hour history of cramping abdominal pain, bilious vomiting, and abdominal distention. His stools are heme positive. Which of the following is the most likely diagnosis? A: Midgut volvulus B: Acute gastroenteritis C: Idiopathic intussusception D: Acute appendicitis E: Gastroesophageal reflux disease 104. An 8-year-old boy presents with acute onset of cramping abdominal pain and vomiting. He has multiple maculopapular rash spots on his lower extremities. Which of the following is the most likely diagnosis? A: Acute appendicitis B: Henoch-Schцnlein purpura C: Kawasaki disease D: Crohn disease E: Sickle cell crisis 105. Which of the following is the most common type of ectopic tissue found in Meckel diverticulum? A: Pancreatic B: Colonic C: Endometrial D: Gastric E: Jejunal 106. Which of the following is the most common cause of intestinal obstruction in patients with Meckel diverticulum? A: Volvulus around vitelline duct remnants B: Omphalomesenteric band 18 C: Volvulus through vitelline duct remnants D: Leiomyoma E: Internal hernia 107. What is the most likely diagnosis in an infant or young child with a history of intermittent swelling in the groin region? A: Direct inguinal hernia B: Indirect inguinal hernia C: Varicocele D: Adenopathy E: None of the above 108. What is the best diagnostic test for the assessment of inguinal hernia in children? A: Ultrasonography B: Plain radiography C: CT D: MRI E: None of the above 109. Which of the following complications is known to occur in children or infants with peptic ulcer disease (PUD)? A: Perforation B: Hemorrhage C: Anemia D: Obstruction E: All of the above 110. Which of the following etiologic factors is not associated with an increased risk for developing peptic ulcer disease (PUD)? A: Use of nonsteroid anti-inflammatory drugs (NSAIDs) B: Brain injury C: Milk intake D: Helicobacter pylori infection E: Alcohol intake 111. A 1-month-old male infant is brought to the office with a 5-day history of nonbilious vomiting. He has been otherwise healthy. Over the last 3 days, his parents have switched formulas twice on the advice that the child has formula intolerance. The child now 19 vomits 5-15 minutes after every feeding, usually forcefully. Skin turgor is decreased and the fontanelle is depressed. What is the most likely diagnosis? A: Gastroesophageal reflux B: Lactose intolerance C: Malrotation and midgut volvulus D: Infantile hypertrophic pyloric stenosis E: Sepsis 112. Persistent vomiting with hypertrophic pyloric stenosis usually causes what electrolyte imbalance? A: Metabolic acidosis B: Metabolic alkalosis C: Respiratory acidosis D: Respiratory alkalosis E: None of the above 113. A 12-year-old boy presents with a 3-week history of abdominal cramping, diarrhea, and hematochezia. Stool culture results are negative. Fecal testing is negative for Clostridium difficile toxins A and B. Findings on upper GI series with small bowel follow-through are normal. Colonoscopy reveals a confluent colitis beginning in the rectum and extending proximally to the splenic flexure. Biopsies reveal diffuse cryptitis. What is the most likely diagnosis? A: Crohn disease (CD) B: Hemolytic-uremic syndrome C: Ulcerative colitis (UC) D: Meckel diverticulum E: Appendicitis 114. A 16-year-old male adolescent with ulcerative colitis develops abdominal pain, abdominal distention, high fever, and toxic appearance. Abdominal radiography shows dilated loops of colon with multiple air/fluid levels. What is the next most appropriate step in the treatment of this patient? A: Barium enema B: Surgical consultation C: Colonoscopy D: Intravenous steroids E: Intravenous cyclosporin 20 115. A 15-year-old adolescent boy has had gradual and persistent lymph node enlargement for the last 5 months. Lymph nodes are firm, nontender, and located in the right cervical area. Accompanying symptoms include weight loss, intermittent fever, and night sweats. Which of the following causes of lymphadenitis is the most likely diagnosis? A: Tuberculosis B: Hodgkin lymphoma C: Infectious mononucleosis D: Non-Hodgkin lymphoma E: Catscratch disease 116. A 6-year-old boy has a 2-day history of swelling in the right side of the neck and fevers up to 101.5°F. Examination of the right anterior cervical region shows a 4-cm firm tender mass with erythema of the overlying skin. The child has no sick contacts that may explain lymphadenitis. Which of the following initial procedures should be used in this patient? A: Empiric antibiotic therapy B: Throat swab for culture of the pharynx C: Lateral neck x-ray D: Incision and drainage E: No action 117. A 15-month-old child recently adopted from China is brought in with septic arthritis of the knee. After blood and aspirate cultures are obtained, the patient is started on cefazolin 100 mg/kg/d. Next-day laboratory results report gram-negative pleomorphic rods in the blood culture. Which of the following is not appropriate management? A: Perform a careful physical examination. If no new findings are present, continue cefazolin. B: Perform a careful physical examination. If no new findings are present, switch to cefuroxime 200 mg/kg/d. C: Patient and other siblings need chemoprophylaxis for Haemophilus influenzae type b (Hib). D: Report the case to the health department. E: Immunize the patient with Hib vaccine after recovery. 118. A newborn presents with a scaphoid abdomen and bilious emesis. Massive intestinal loss could occur if which one of the following causes of neonatal bowel obstruction is not quickly identified and treated? A: Pyloric stenosis B: Malrotation with volvulus C: Meconium ileus D: Hirschsprung disease 21 E: Congenital diaphragmatic hernia 119. Thirty-six hours after delivery, an otherwise healthy term infant has not yet passed meconium (has not yet had a bowel movement). Which one of these modalities would not be an appropriate step in the child's workup? A: Suction rectal biopsy B: Contrast enema C: Colonoscopy D: Chromosomes for delta F-508 E: Plain abdominal radiography 120. A 10-day-old infant of 23 weeks’ gestation has increasing oxygen and ventilator requirements to maintain normal blood gases over the past 48 hours. Which of the following should not be included in the differential diagnosis for the increased ventilator and oxygen requirements? A: Onset of bronchopulmonary dysplasia (BPD) B: Symptomatic patent ductus arteriosis (PDA) C: Nosocomial infection D: Retinopathy of prematurity E: All of the above 121. A 3-day-old infant is seen for his hospital discharge examination. He is the 3650gram, Coombs negative infant of a 20-year-old primigravida mother with an uncomplicated pregnancy, labor, and delivery. He is breastfeeding fairly well, but the mother's breast milk is only beginning to increase today. His circumcision has some oozing, and his heel is still bleeding from blood sampling an hour ago. He is mildly jaundiced, but the physical examination is otherwise unremarkable. What should the initial workup include? A: Vitamin K level B: Cranial ultrasound or CT scan C: Prothrombin time (PT), activated partial thromboplastin time (aPTT), fibrinogen levels, CBC, and platelet count D: All of the above E: Only A and C 122. A 3-day-old infant who weighs 3650 grams and was born to a 20-year-old primigravida mother with an uncomplicated pregnancy, labor, and delivery is breast-feeding fairly well, but the mother's breast milk is only beginning to increase today. His circumcision has some oozing, and his heel is still bleeding from blood sampling an hour ago. He is mildly jaundiced, but the physical examination is otherwise unremarkable. The CBC shows a hematocrit of 62, the bilirubin is 12 mg/dL, the prothrombin time (PT) is twice the value of the control, and the remainder of the tests are within normal range. Review of the chart shows that 22 erythromycin eye prophylaxis was administered, but no record of vitamin K dosing can be found. What is the most appropriate next step? A: Send out protein induced by vitamin K antagonism (PIVKA)-II and vitamin K levels. B: Administer 1 mg vitamin K IM. C: Discharge with follow-up in 2 days. D: Administer 1 mg vitamin K IV. E: Discontinue breast-feeding and begin infant formula. 123. A 3-week-old, ex-27 week premature infant has increased abdominal girth and 10 mL of green-tinged gastric residual. The patient has been tolerating enteral feedings of 20-calorie premature formula and was increased to a 24-calorie formula yesterday. The patient has had slightly more bradycardia episodes with desaturation today. Bowel sounds cannot be appreciated on auscultation, but results of serum electrolytes and CBC are within the reference range. The abdominal radiograph is as shown. Which of the following is not part of the appropriate immediate management of this infant? A: Draw blood cultures and begin broad-spectrum antibacterials. B: Hold one feeding and then continue with previous feeding regimen. C: Consult a pediatric surgeon as soon as possible. D: Place the baby on nothing by mouth (NPO) and begin total parenteral nutrition for at least 7 days. E: Place a large-bore gastric catheter for bowel decompression. 124. A 62-day-old female infant presents with a 4-week history of periumbilical erythema unresponsive to topical antibiotics. The umbilical cord did not separate until day 48. Records reveal that a previous sibling died in infancy. Which of the following diagnoses is most likely? A: Bruton agammaglobulinemia B: Congenital HIV infection C: Leukocyte adhesion deficiency D: Adenosine deaminase deficiency 23 E: Selective immunoglobulin A deficiency 125. A 28-day-old infant presents with a 3-day history of increasing periumbilical erythema. On examination, the diaper is removed and a distinct greenish brown staining is discovered that overlies the umbilical region at the top of the diaper. The mother comments that this is a common finding. Which of the following diagnoses is most likely? A: Patent urachus B: Neonatal alloimmune neutropenia C: Maple syrup urine disease D: Homocystinuria E: Patent omphalomesenteric duct 126. Upon delivery of a baby with a small intact omphalocele and an enlarged tongue, which of the following is foremost in the physician’s mind in the management of this infant? A: Cover the omphalocele membrane with plastic wrap to prevent loss of body warmth and fluid. B: Insert an orogastric tube to decompress the intestinal tract. C: Promptly arrange consultation with a pediatric surgeon to repair the omphalocele and assess the baby's airway. D: Insert an IV to correct fluid and electrolyte losses. E: Insert an IV to provide glucose. 127. A maternal ultrasound reveals a baby with gastroschisis. What should the physician recommend to the parents regarding the baby's management? A: Amniocentesis and elective cesarean section once lung maturity is verified B: Serial ultrasound exams with induction of labor and vaginal delivery if polyhydramnios develops or if the intestine appears increasingly dilated C: Amniocentesis to determine presence of associated genetic defect D: Fetal echocardiography to determine presence of associated cardiac defect E: Serial ultrasound exams with delivery by cesarean section if polyhydramnios develops or if the intestine appears increasingly dilated 128. Which of the following is the most common presentation for Wilms tumor? A: Abdominal mass B: Abdominal pain C: Urinary tract infection D: Hematuria E: Varicocele 24 129. Which of the following is not commonly part of the initial evaluation of Hodgkin disease? A: Chest radiograph B: Biopsy C: Lumbar puncture D: Bone marrow aspirate and biopsy E: Bone scan 130. Which of the following is the most common site of recurrence after treatment for Wilms tumor? A: Liver B: Tumor bed C: Lungs D: Brain E: Bone 131. Which of the following symptoms or signs is almost invariably observed in children with bronchiectasis? A: Headaches B: Nightmares C: Cough D: Respiratory failure E: Hemoptysis 132. Which of the following is the optimal study for the diagnosis of bronchiectasis? A: Chest radiography B: Sweat chloride test C: Barium swallow D: Chest computed tomography E: Bronchography 133. Of all of the anomalies that constitute the exstrophy-epispadias complex, which is the most common? A: Cloacal exstrophy B: Classic bladder exstrophy C: Male epispadias D: Female epispadias 25 E: Superior vesical fissure 134. Which clinical feature is not present in cloacal exstrophy? A: Spinal abnormality B: Hemibladders adjacent to exposed cecum C: Gastroschisis D: Omphalocele E: None of the above 135. Which of the following is not accurate regarding the repair of hypospadias? A: Adjunctive hormonal therapy is sometimes used preoperatively. B: Urethral stents are commonly used during healing. C: Surgery is usually delayed until the patient is older than 3 years. D: Penoscrotal transposition is usually repaired as a staged procedure. E: Postoperative complications include bleeding, fistula formation, and meatal stenosis. 136. Which of the following statements is correct? A: Palpable varicoceles often present by age 10 years. B: A varicocele that does not reduce when the patient is supine is grade 3. C: Reduced total sperm count is the only semen abnormality observed with varicoceles. D: Serum testosterone is often below the reference range in patients with a high-grade varicocele. E: Left-sided varicoceles account for 90% of all cases. 137. Which of the following is not an indication for adolescent varicocele ligation? A: Abnormal semen parameters B: Pain with prolonged standing C: Delayed puberty D: Bilateral varicoceles E: Ipsilateral volume loss greater than 20% 138. A 3-month-old uncircumcised male infant presents with a 2-day history of inability to advance the foreskin over the glans. The mother reveals that since birth, she had been forcibly retracting the foreskin to clean the glans. Examination reveals an edematous ring of foreskin retracted behind the glans. After manual reduction is successfully performed, which of the following procedures is most appropriate? 26 A: Insert a urethral catheter. B: Arrange immediate circumcision in the operating room. C: Instruct the parents to continue forcibly retracting the foreskin to clean the glans. D: Refer the patient to an urologist for circumcision at a later date. E: Perform a dorsal slit procedure. 139. Expectant parents ask for help deciding if they should request neonatal circumcision for their son. Which of the following statements should not be offered to help them make the decision? A: Risk of urinary tract infection is slightly higher in uncircumcised male infants. B: Some organizations believe that the foreskin has important protective, sensory, and sexual functions. C: Procedural analgesia is not necessary. D: Bleeding is the most common complication of circumcision. E: Circumcision has reportedly been associated with various complications, including unsatisfactory cosmesis, urinary retention, meatal stenosis, and recurrent phimosis. 140. Which of the following is the single most important determinant influencing outcome in patients with biliary atresia? A: Level of direct bilirubin at the time of surgery B: Presence of dilated biliary duct remnants in the porta hepatis C: Age at time of operation D: Availability of a donor liver for orthotopic liver transplantation E: Nutritional status at time of surgery 141. In the evaluation of neonatal cholestasis, which of the following is the most valuable nonsurgical test for differentiating intrahepatic and extrahepatic etiologies? A: Percutaneous liver biopsy B: Real-time ultrasonography C: Serum gamma-glutamyl transpeptidase (GGTP) D: Hepatobiliary scintigraphy E: Serum bile acids 142. A 4-year-old boy presents with a 5-day history of dysphagia and hoarseness. His respiratory rate is 45 breaths per minute, and he appears to be in mild respiratory distress. He has diffuse expiratory wheezes on chest auscultation. No other significant physical examination findings are present. The patient, parents, and siblings deny a history of foreign body ingestion, but his chest radiograph reveals an ingested coin. Which of the following is the most appropriate management? 27 A: Push the foreign body into the stomach with an appropriately sized bougie under sedation (ie, midazolam, fentanyl). B: Observation in the hospital is appropriate. This foreign body likely poses no problem and will pass through the gastrointestinal tract without incident. C: Protect the airway and immediately remove the foreign body under general anesthesia with esophagoscopy. D: Remove the foreign body with a Foley catheter under sedation. E: Flexible endoscopic removal in the emergency department with no sedation is recommended. 143. A mother brings in her 3-year-old child because she witnessed her son swallow a watch battery 1 hour ago. Which of the following is the most appropriate initial step in the management of this toddler following a history and physical examination? A: Obtain a barium swallow. B: Proceed directly to the operating room to perform rigid esophagoscopy. C: Perform bougienage immediately to dislodge the battery into the stomach. D: Obtain an extended chest radiograph to determine the location of the foreign body. E: Do nothing because watch battery ingestion is not worrisome; it seldom results in a complication. 28